torch.fmax — PyTorch 2.7 documentation (original) (raw)

torch.fmax(input, other, *, out=None) → Tensor¶

Computes the element-wise maximum of input and other.

This is like torch.maximum() except it handles NaNs differently: if exactly one of the two elements being compared is a NaN then the non-NaN element is taken as the maximum. Only if both elements are NaN is NaN propagated.

This function is a wrapper around C++’s std::fmax and is similar to NumPy’s fmax function.

Supports broadcasting to a common shape,type promotion, and integer and floating-point inputs.

Parameters

• input (Tensor) – the input tensor.
• other (Tensor) – the second input tensor

Keyword Arguments

out (Tensor, optional) – the output tensor.

Example:

a = torch.tensor([9.7, float('nan'), 3.1, float('nan')]) b = torch.tensor([-2.2, 0.5, float('nan'), float('nan')]) torch.fmax(a, b) tensor([9.7000, 0.5000, 3.1000, nan])